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Proceedings Paper

Kinetics and Rutherford backscattering study of the photo-induced solid state chemical reaction between silver and amorphous As33S67 layers
Author(s): Tomas Wagner; Miroslav Vlcek; Miloslav Frumar; Vratislav Perina; Eero Rauhala; Jaakko Saarilahti; Peter J.S. Ewen
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Paper Abstract

The kinetics of photo-induced solid state chemical reaction of silver with a As33S67 films in conventional sandwich structure was measured by monitoring the change in thickness of the undoped chalcogenide using a modified computer-controlled technique. The kinetic data obtained shows that there are two stages in the photo-induced reaction process. Rate coefficient and activation energies have been measured and a comparison of the composition and structure of reaction products detected by Rutherford backscattering spectroscopy (RBS) has been made. The RBS spectra obtained at different stages of the photo-induced reaction process show a step-like form of the Ag concentration profile during the course of the reaction and the homogeneous distribution of Ag in the final reaction products, e.g. 31 at percent Ag. The step-like form of the Ag concentration profile is discussed in the framework of the G-cAg diagram for the Ag-As33S67 system. On the basis of the RBS results, it is suggested model explaining the kinetics of the photo-induced reaction.

Paper Details

Date Published: 19 August 1996
PDF: 11 pages
Proc. SPIE 2776, Developments in Optical Component Coatings, (19 August 1996); doi: 10.1117/12.246830
Show Author Affiliations
Tomas Wagner, Univ. of Pardubice (Czech Republic)
Miroslav Vlcek, Univ. of Pardubice (Czech Republic)
Miloslav Frumar, Univ. of Pardubice (Czech Republic)
Vratislav Perina, Institute of Nuclear Physics (Czech Republic)
Eero Rauhala, Univ. of Helsinki (Finland)
Jaakko Saarilahti, Technical Research Ctr. of Finland (Finland)
Peter J.S. Ewen, Univ. of Edinburgh (United Kingdom)

Published in SPIE Proceedings Vol. 2776:
Developments in Optical Component Coatings
Ian Reid, Editor(s)

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